class commm {
    uuid(thisobj) {
      var s = [];
      var hexDigits = '0123456789abcdef';
      for (var i = 0; i < 36; i++) {
        s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
      }
      s[14] = '4';
      s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1);
      s[8] = s[13] = s[18] = s[23] = '-';
  
      thisobj.uuidA = s.join('');
      console.log(s.join(''), 's.join("")');
      return thisobj.uuidA;
    }
  }
  export default new commm  // 导出该方法